Measurement of axial and transverse trapping stiffness of optical tweezers in air using a radially polarized beam

Masaki Michihata, Terutake Hayashi, Yasuhiro Takaya

研究成果: ジャーナルへの寄稿記事

51 引用 (Scopus)

抄録

The trapping efficiency and stiffness of optical tweezers using radial polarization are evaluated; the ray-tracing method and a proposed measurement method are used for numerical and experimental analyses, respectively. The maximum axial trapping efficiency with radial polarization is 1.84 times that with linear polarization, while the maximum transverse trapping efficiency decreases by 0.58 times. Further, the axial and transverse trapping efficiencies are found to be 1.19 times larger and 0.83 times smaller, respectively, than the values with linear polarization. From the experiments, the axial and transverse stiffness values are 1.2 times larger and 0.8 times smaller, respectively, with radial polarization. Hence, radial polarization enhances the axial trapping properties while reducing the transverse trapping properties.

元の言語英語
ページ(範囲)6143-6151
ページ数9
ジャーナルApplied Optics
48
発行部数32
DOI
出版物ステータス出版済み - 11 10 2009
外部発表Yes

Fingerprint

Optical tweezers
stiffness
trapping
Stiffness
Polarization
air
Air
polarization
linear polarization
Ray tracing
ray tracing

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

これを引用

Measurement of axial and transverse trapping stiffness of optical tweezers in air using a radially polarized beam. / Michihata, Masaki; Hayashi, Terutake; Takaya, Yasuhiro.

:: Applied Optics, 巻 48, 番号 32, 10.11.2009, p. 6143-6151.

研究成果: ジャーナルへの寄稿記事

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